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Posted to dev@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2016/03/05 02:52:40 UTC

[jira] [Created] (HIVE-13212) locking too coarse for update/delete on a pratition

Eugene Koifman created HIVE-13212:
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             Summary: locking too coarse for update/delete on a pratition
                 Key: HIVE-13212
                 URL: https://issues.apache.org/jira/browse/HIVE-13212
             Project: Hive
          Issue Type: Bug
          Components: Transactions
    Affects Versions: 1.2.1
            Reporter: Eugene Koifman
            Assignee: Eugene Koifman


create table acidTblPart (a int, b int) partitioned by (p string) clustered by (a) into " + BUCKET_COUNT + " buckets stored as orc TBLPROPERTIES ('transactional'='true')

update acidTblPart set b = 17 where p = 1

This acquires share_write on the table while based on p = 1 we should be able to figure out that only 1 partition is affected and only lock the partition

Same should apply to DELETE



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